DEWALT 150 ft. Red Self-Leveling Rotary Laser Level with Detector and Clamp, Wall Mount, Remote, Bag, (2) D and (1) 9V battery DW074KD - The Home Depot
DeWALT® DW083K Electronic Self-Leveling Rotary Laser Level Kit - 100 ft - +/-1/4 in at 100 ft - +/-4 deg Auto Leveling
Spectra Precision LL300S-BCA LL300S Self-Leveling Rotary Laser With Al